Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2011-06-14
2011-06-14
Benson, Walter (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S599000, C318S811000
Reexamination Certificate
active
07960930
ABSTRACT:
In the rectangular-wave voltage control mode, torque feedback control, in which the voltage phase of the rectangular-wave voltage is adjusted based on the deviation of the torque estimated value from the torque command value, is performed. A torque estimation portion calculates the torque estimated value using the motor currents calculated based on the values detected by a current sensor and a rotational position sensor, as in the case of the PWM control mode. Namely, the same state quantity (quantity detected by the sensors) of the alternating-current motor is used in the motor control in both the rectangular-wave voltage control mode and the PWM control mode.
REFERENCES:
patent: 4023083 (1977-05-01), Plunkett
patent: 4047083 (1977-09-01), Plunkett
patent: 5166593 (1992-11-01), De Doncker et al.
patent: 5804939 (1998-09-01), Yamai et al.
patent: 6781333 (2004-08-01), Koide et al.
patent: 6927551 (2005-08-01), Yoshimoto
patent: 7554281 (2009-06-01), Satake et al.
patent: 2006/0145652 (2006-07-01), Ta et al.
patent: 1 263 125 (2002-12-01), None
patent: A-11-285288 (1999-10-01), None
patent: A-11-299297 (1999-10-01), None
patent: A-2000-050689 (2000-02-01), None
patent: A-2000-270558 (2000-09-01), None
patent: A-2004-007900 (2004-02-01), None
patent: A-2005-117756 (2005-04-01), None
patent: A-2005-124359 (2005-05-01), None
patent: A-2005-168115 (2005-06-01), None
patent: WO 2005/013473 (2005-02-01), None
patent: WO 2005/112249 (2005-11-01), None
Office Action issued Jan. 18, 2011 in Japanese Application No. JP-2005-355087 (with translation).
Benson Walter
Oliff & Berridg,e PLC
Paul Antony M
Toyata Jidosha Kabushiki Kaisha
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